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← HistoryWhich outcome arises when early bronze smelting introduces impurities?
A)Ductility sharply decreases✓
B)Casting temperature elevates
C)Corrosion resistance increases
D)Thermal expansion reduces
💡 Explanation
Introducing impurities lowers ductility due to grain boundary disruption, a form of solid solution strengthening, because the impurities impede dislocation movement. Therefore, ductility decreases, rather than improved casting, enhanced corrosion resistance, or reduced thermal expansion, which necessitate specific alloy choices.
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